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Finding the Fourth Proportional to 115,607.54, 172,975.27 and 68,248.39

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Solution

The fourth proportional to 115,607.54, 172,975.27 and 68,248.39 is: 102,115.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,607.54 : 172,975.27 = 68,248.39 : x
  2. Step 2: Convert to fraction form
    115,607.54/172,975.27 = 68,248.39/x
  3. Step 3: Cross multiply
    115,607.54x = 172,975.27 × 68,248.39
  4. Step 4: Simplify right side
    115,607.54x = 11,805,283,687.32
  5. Step 5: Solve for x
    x = 11,805,283,687.32/115,607.54
  6. Step 6: Final answer
    x = 102,115.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.